【 Weak current College 】 energy and technology

Overview

"Energy conservation, protection of resources" is our pursuit of sustainable development in the new era of great strategic means of guarantee and, since reform and opening up, China's economy remains high at 8% growth rate, already on the rapid growth in the supply of energy has become the bottleneck of economic growth, energy efficiency has become a national economic development of a long-term strategy, businesses are increasingly recognizing the importance of saving energy.

Conserve energy as the name suggests is to save energy consumption. Starting from energy production to the final consumer, in its various aspects, such as mining, transportation, processing, conversion and use to reduce losses and waste. From an economic sense, through rational use, scientific management, technical progress achieved with minimal energy consumption and maximize economic efficiency. World Energy Conference survey of energy saving Committee shows that developing energy utilization of only 20% ~ 30%, industry developed and only 40% to 50% of the global energy saving potential is great. If the world's energy consumption by various technical means savings of 10%, then the savings of energy will be more than the world all hydropower station can provide electricity combined. International energy sector departments or even energy known as the fifth largest energy, coal, petroleum and natural gas, hydroelectric, nuclear power's energy-saving side-by-side, of great significance.

Although China's energy resources are abundant, but the per capita amount is lower, and consumption, and wasted. Energy conservation attach great importance to our country, in 1997, at its eighth session of the Standing Committee at its 28th session, on 1 January 1998 formally implemented the People's Republic of China Energy Conservation Act. The Act concerning energy management, rational use of energy resources, promoting energy-saving technology, legal liability, etc.

Energy-saving technology generally include the following three areas: one, enhances the existing energy utilization; second, the selection of new materials in order to achieve the purpose of energy saving; the third is the study of energy storage technologies, will temporarily use of energy storage.

First, China's energy demand forecasting

2001 national energy expenditure of 1.25 billion yuan, accounting for 13% of GDP, according to the current trend of development, by 2020, primary energy demand will reach 3.5Gtce, coal demand up 610Mtce 2.9Gtce, oil. Such a huge demand for coal supply, oil, security and environment are very serious problems, our energy base can be supported?

Deputy Director of the development research center of State Council, Chen Qing Tai energy should be put in the primacy of the energy strategy, that is, in order to meet the growing demand for energy-saving than increased energy supply more priority, in order to establish an important strategic position of energy saving, it is recommended that you save the resources raised to the height of a basic national policy, "population control, conserve resources, protect the environment" as the new era of basic national policy.

Second, China's energy efficiency and advanced countries of gap

In recent years, China's "insist on resource development and savings, the savings come first" principle, the energy saving achieved remarkable results. But many enterprises in China have not been fundamentally out of extensive management, outstanding issue is the quality and efficiency of economic growth is not high, the main reason for this lies in the structure, poor product quality, energy, raw material consumption, waste, energy use, specifically reflected in:

First, is the product of high energy consumption, major energy-using products unit energy consumption than developed countries high 30 ~ 80%, an average of 40%. Recent technology energy-saving potential for 120Mtce.r>
Second, is the output of high energy consumption, China's economy energy intensity (output power) is one of the most high, about Korea 3.7 times United States 7.4 times Japan 12.8 times the world average of 4.3 times (here's economic structure, exchange rates, etc. not comparable factors), the recent output energy-saving potential of up to 300 ~ 400Mtce, compared with developed countries, we have a great gap, so there are relatively large in our description of energy-saving potential, to our province, for example, if the annual resource consumption savings of 1%, at least you can get 70 billion in economic benefits.

3. energy-saving technology

1. improving energy utilization

For energy utilization, popular, mainly energy efficiency, i.e., the energy is the energy use of some people with energy contained the ratio of the total energy. The greater the ratio, the energy contained in total energy use by people in some of the more, the higher the energy utilization.

At present, for various reasons, the use of conventional energy efficiency is very low. Only to thermal power, for example, the efficiency of only 30% to 40%. For example, coal combustion produces 100J calories, of which only 30 ~ 40J's heat into electricity, while the remaining 60 ~ 70J thermal energy through a variety of approaches in transformation of lost in the process. If you can substantially improve the conventional energy utilization, can effectively reduce the consumption of conventional energy resources, so as to achieve the purpose of energy saving.

(1) heat cogeneration

We all know that. Power by burning fuel generated heat energy to water into a high temperature and high pressure steam, high temperature and high pressure steam turbine generators for impact. Through the turbine steam still has a very high temperature, if not recycling, water vapor in a considerable part of the energy will be wasted, if directly into rivers, also produces heat pollution. Therefore all countries in the study of this technology. The generator, heat exchanger close together, so that the whole system to generate electricity and heat to the outside world, the collection of hot water can be recycled. This method enables the heat recovery and heat were fully utilized, can be a lot save fuel energy utilization increased 15% to 30%.

(2) circulating fluidized bed technology

In the future for quite a long time, coal is still the main energy of human existence. Therefore, improving the utilization of coal in energy-saving technology in occupies an important position, it is important to long-term research.

In our country, coal is used primarily for thermal power plants, industrial boilers and civilian fuel. As a result of combustion equipment behind, causing the burning rate is low, while producing significant amounts of harmful gases and dust, environmental pollution. Therefore, the study of coal-fired technologies is increasing the importance of coal utilization.

If coal utilization increased by 10%, then a year to around, thus saving coal 10t its coal saving effect is very significant. Circulating fluidized bed technology is a new generation of more mature coal technology, it is the coal and adsorption sorbents to join in the bed of the combustor, and the bottom from the boiler to the combustion chamber so that the compressed air blowing in pulverized coal combustion spread throughout the room vulcanization combustion. Combustion of coal and coal after mash-up, and then returns to the secondary combustion chamber, the results can be combustion efficiency as high as 99%. Therefore, this technology is an efficient, clean, you can burn the inferior coal, etc., present 400t/h circulating fluidized bed boiler has been put into use, some developed countries being built 800t/h of circulating fluidized bed boiler and 10kW genset 2.35 × auxiliary power plant.

(3) fuel-saving technology

The oil and waterby a 2: 1 proportion mixed up with a frequency of more than 2 × 10Hz ultrasonic will water and oil mixture evenly into emulsions, emulsion of small water droplets are oil molecules surround the oil increases the surface area of millions of times, thereby greatly improving the burning speed. And burns, surrounded by the oil molecules heated small water droplets will burst, it broke the surface of the reservoir, so that the oil surface area further expanded, thus greatly increasing the utilization of oil combustion. Moreover, this mixed fuel energy to produce than single-use oil, and they almost do not produce smoke and ashes, is really two birds with one stone. Other fuel-saving technology is in gasoline mixed in 4% hydrogen, as an automobile engine fuel, saving up to 40% for gasoline. Recently someone discovered that kerosene, gasoline, diesel fuel after magnetization, changed the fuel ignition, viscosity and other physical properties that diminish the gravity of the oil molecules so that oil is easy to form a mist, allowing oil to complete combustion. Using magnetic oil can save nearly 20% of the fuels, energy-saving effect is considerable.

(4) electronic energy-saving

In the large electrical devices use power electronics technology, you can also get significant energy saving effects. The so-called power electronics is a power semiconductor device as the core, plus the power exchange technology, control technology, electronics and computer technology of integrated high-tech, it has developed into an important electromechanical technology.

Current second generation power semiconductor devices for pressure resistance can be as high as above, but allows 4500v through current also to 2500A above, a fully capable industrial and mining enterprises, civil electric power and other occasions of automatic control. Using power electronics control motor, the energy savings from 30% to 50%. For example, one of the industrial boiler of the 20t fan, power technology transformation, the annual saving 2.5 × 10kW · h; Beijing State cotton factory adopted after saving power electronics 52.35%.

Another effective way to save energy is the conversion technology. Frequency of two kinds, one kind is the mechanical conversion, electronic frequency. Inverter is designed to change the AC frequency, use of electrical equipment in the most economical State run, so as to achieve the purpose of saving power.

Mechanical conversion by two (three phase) induction motor. One motor stator windings in the three-phase AC power, then, in the motor rotor coil around a rotating magnetic field, the frequency of rotation of the rotating magnetic field is equal to the frequency of the alternating current. Because the motor rotor by wire-wound, so when the stator coil produces the rotating magnetic field and rotor coil produces the induced current, current is rotating magnetic field and magnetic moments's role, forcing the rotor coils and rotate rotating magnetic field in the same direction. If the motors with a little modification, with two sliding ring the rotor coils of induced current in the nutty, with another motor to drive the motor rotor, practice shows that leads to changes in the frequency of the induced current, with rotor speed changes, and the rotor and the rotating magnetic field and the direction of rotation, the induced current changes in frequency of smaller, two opposite direction of rotation, the induced current changes in frequency. If you change the frequency of alternating current in the future to other motor, you can adjust other motor speed, this technique is called frequency.

Electronic frequency is similar to the signal generator, its principle is to use current L-C oscillation circuit, so as to achieve the purpose of changing the AC frequency. For example, a building of automatic water supply equipment, if not using frequency conversion technology, so as long as someone with a water supply equipment isin full working order, but the use of the frequency conversion technology, water supply equipment will be under water consumption per time unit sized motor speed, water usage hour motor go slowly when heavy water motor go fast, so as to achieve the purpose of energy saving.

At present the domestic market of the frequency inverter air conditioners, refrigerators and other products, is based on the temperature level to control the speed of the compressor, so these products are energy-saving products.

2, material-saving

Where to save energy-saving materials materials call. To select materials for energy purposes method called material and energy saving. To date, has found the energy-saving materials up to thousands of species. Here are a few of them, as well as the application of these materials after the energy saving effect.

(1) of amorphous Fe-based alloy

Amorphous Fe-based alloy is an iron-basedTo raw material of amorphous metal. Typically, all metals are crystals, crystal molecules are arranged there is a certain law, since the metal of the micro-structure, that makes metal with good electrical conductivity, but sometimes people do not need this kind of electrical conductivity. For example, for the production of silicon steel transformer core material is in the iron mixed with a small amount in the uniform of silicon, mixed into Silicon aims to improve the capacity of magnetic iron core, while reducing the ability of core of conductive, and in order to further reduce the ability of core of conductive, people made of silicon steel sheet, and then use the many pieces of silicon steel sheet pile of synthesis of a core and tablets and tablets with insulation adhesive bonding, even so, the transformer at work, the core by the alternating magnetic field in each piece of silicon steel due to electromagnetic induction phenomenon resulting from the induced current, this part of the induced current because people cannot take advantage ofit is wasted wasted, this is what we usually say Eddy current losses.

In order to further reduce the Eddy current losses, people developed the amorphous material, this material is melted State of liquid metal in an extremely rapid cooling (10 ~ 10 °/s). Due to cooling too fast, the metal atom could arrange into orderly structure, has solidified liquid metal, liquid-level atom in no order is preserved, formed like a glass-like amorphous metal. This amorphous metal magnetic ability is very strong and very weak electric capacity, use it for transformer, Eddy current losses only ordinary silicon steel cores of 25%, thus greatly saves energy. Moreover, the same performance comparison of the two transformers, amorphous core transformer quality than ordinary transformer is much smaller, small volume, and temperature rise of working time. For example, a capacity of up to 3 x the transformer 10VA via AC frequency application for 400Hz, amorphous cores than ordinary transformer volume decrease of 17%, weight decrease of 46%, 85% of the exciting current smaller, lower temperature rise 50% ~ 60%, the comprehensive efficiency as high as 98.5%.

Currently, the United States and Japan in research on amorphous materials. According to statistics, the use of transformers throughout Japan every year produces Eddy current losses up to 10kW 3.6 × · h, if you swap the amorphous core transformer, Eddy current losses can be reduced to the 1.8 × 10kW · h, and savings in electrical energy can meet a 100 million households in urban use.

(2) aluminum

Aluminum alloy used in automobile manufacturing, its primary purpose is to reduce the weight of the car, thus increasing vehicle payload. As we all know, the auto industry cannot be separated from the steel, automotive weight more than 80 per cent was accounted to iron and steel. If you are using aluminum instead of steel, you can significantly reduce vehicle weight, thereby reducing the consumption of non-functioning car, the purpose of achieving energy saving. Has anyone done a test, if a car use 50kg aluminum, can reduce the weight of the car, allowing each 116kg kilometers around fuel consumption reduced to a 6g years traveling 1 million meters of calculation, the annual fuel consumption will reduce 60kg. If all the cars have different degrees of aluminum alloy for parts, fuel-saving effect is very large. Germany of a car company manufacturing of Porsche Cars, each car use aluminum has been as high as $ 236kg, not only reduces the vehicle's weight, reducing energy consumption and improves the vehicle's performance. If the aluminum mixed in magnesium, copper and other metals, to make the impact resisting performance aluminum alloy and steel similar, has become the preferred car bumper.

(3) no filament and long life-saving lamp

When the lamp connected to AC power, the oscillator, the amplifier will produce a high-frequency electromagnetic oscillation, the high-frequency electromagnetic oscillation is set in bulb in a special issue of the transmitting antenna, the formation of high-frequency radio waves within the bulb, the radio waves can make the necessary and sufficient in bulb mercury vapor generation within the plasma ionization. A large number in a high energy level of the mercury atoms occurring radiation transitions will release a lot of UV radiation, ultraviolet bulb of painting on the wall of the fluorescent substances absorb can emit visible light. This no filament bulb, so there is no heating element consumption, thereby increasing the luminous efficiency. Not only that, because of the omitted tungsten filament do, so greatly extend the life of the lamp. A normal incandescent lamp normal life about 1000h, a fluorescent tube in normal life span of about 7000 ~ 10000h, and this energy saving lamp life of up to 14 years, this kind of light-emitting efficiency is Mandarin incandescent lamps 4 x, costs only for the same brightness incandescent 1/3 or so. Somesay it is a light bulb in the history of a major breakthrough, perhaps in the near future to become a major tool for human lighting.

3. energy storage technology

If a city in the electricity consumption peak electricity is electricity trough 2 times, then give the city power supply of the power plant's total installed capacity, must be designed according to the peak power consumption, and the electricity trough (such as late at night), almost half of the installed capacity of power plant are wasted, this not only wastes a lot of energy, but also to the power grid of a negative impact on safety. To resolve this issue, people naturally think of the use of electric energy storage.

However, the power belongs to the process of energy, not to be wasted, like water, is not easy to directly store. Therefore you must put the energy into the energy of the other makes it easy to store. This technique is called peak load shifting energy storage technology that uses electricity trough the surplus of energy storage in power at the peak and then stored energy into electrical energy to compensate for the lack of electricity.

(1) ice storage technology

We all know that heat is the energy of a manifestation, in a sense, the cold is the energy of a form. Ice cold, as the name suggests is ice cold store, when you need to release the cold, ice absorbs heat from the surrounding objects, in order to achieve the objective of the body temperature. Daily life, Industrial and agricultural production, Commerce, tourism and other industries that require large amounts of cold, especially during the hot summer, cold place more. Usually people are taken with air conditioners, refrigerators and other electrical refrigeration and cooling methods, so as to increase the burden of the power plant, and many large power plants are thermal power plant, the issue of power, the consumption of fossil fuel more pollution also. To avoid these situations occur, people think ofelectricity at night, with low period of excess power refrigeration power plant, by day and then made some place of ice to cool down, so as to achieve open air conditioner air conditioning or less. This can reduce electricity consumption during the day, which greatly saves generator installed, played a role in saving energy. Moreover, it also reduces the generator installed, even less to build power plant, also reduces emissions of harmful substances, improvements in the quality of the environment.

In the early 1970s, developed countries began to study on ice storage technology. The 80 's to start the application. Today, ice storage technology as an electricity peak load shifting means, has been widely used in building internal cooling and industrial cooling. Our country is also actively promote and intensify research on ice storage technology.

(2) carbon dioxide energy storage technology

Use carbon dioxide energy storage method is to use electric power plants in the Valley, redundant power for driving large compression type

Refrigeration system, the gaseous carbon dioxide frozen into solid carbon dioxide, and then with solid carbon dioxide to gaseous ammonia cooling for liquid ammonia. Wait until the peak electricity use, so that the liquid ammonia heat absorbing gasification and gas turbine generator to produce electricity. This system's biggest advantage is a small footprint. For example, a pumped storage power station, each storing electrical energy 1000kW · h, volume of the reservoir for 140m, and carbon dioxide energy storage systems storage of electrical energy, as long as the floor space 28m is sufficient. In addition, carbon dioxide and energy storage system during short, environmental impact is small, the site is easy to select, and other advantages.

IV. energy measures

According to reports developed advanced enterprise power-saving potential of 20%, China's average about 40% of the individual up to 50% energy saving potential is seen very huge, it is generally estimated that the total saving benefit, through the Organization of management can receive approximately 30%, through improved process, processing methods and implement some basic free technical measures can receive approximately 40%, by transforming or increase device and consume a larger investment can receive approximately 30%. Obviously, should give priority to measures of organizational management and technical measures.

Factory-saving energy-saving can be divided into management, energy-saving and power-saving technology structure in three ways. Management power saving by improving and strengthening management and evaluation, to mining potential, reducing waste of electricity-saving manner; power saving by structures to adjust product structure to achieve energy-saving manner; power-saving technology is through the device update, the process of reform, to adopt advanced technology to achieve the section's way.

5. to promote energy-saving technology

To significantly improve energy levels, in addition to the optimized structure, strengthen management, we believe that promoting technological progress, promote energy-saving technology, updating and modification of old equipment, reconstruction of outdated technology, improve equipment efficiency, etc., are important. 1973 to 1985 period 19 major industrial countries have made significant energy saving achievement is mainly derived from technological progress, which is transformed with the production process and equipment technologies with low energy consumption, and successfully bring the country out of two energy crises. Recent national energy efficiency Conference focused on the promotion of energy saving technology, we should pay great attention to, try to use.

1, high efficiency and energy saving lamp

In recent years, China's energy-saving lamp is promoted by: rare-earth fluorescent, metal halide lamps, high pressure sodium lamp, dy light wire wire type of incandescent lamp. One of the rare-earth fluorescent lamp 11W light flux 60W incandescent equivalent, is the civil key promoting electric light sources. Roads, squares, factory, workshop, etc should promote the use of dysprosium lamps, high pressure sodium lamp, metal halide lamps.

2. power saving technology fans and pumps

We currently have various fan 700 million units, pump 3000 million units, the total output of about 1.1 million KW, annual electricity consumption in occupies national total consumption 1/3. Since the design performance and poor quality manufacturing, supporting unreasonable, operation and maintenance of a low level, the actual operation of fan efficiency ratio advanced countries low 5 ~ 20%. Estimated annual number of power 200 billion KWh.

3, electronic energy-saving technology

The electronic pressure regulator, speed technology enables the motor equipment and load the best fit, achieve economic operation, reducing power consumption. Microelectronics technology application microprocessor programming and process parameters and processes automated control.

4. cool energy-saving technology

It is night-time lows of refrigeration to electricity, the amount obtained by the cold store for daytime use of electricity, Gao-saving air conditioning electricity has great significance. Cool air conditioning system in the foreign application has more than 10 years, beginning in the 1990s a number of demonstration projects, energy-saving effects and economic benefits of the very significant.

5, waste heat recovery power generation technology

Cogeneration, TRT, waste heat recovery power, promoting for many years, our country has already achieved very good results, is also recyclable, pig iron, ferroalloys production process can generated, as well as recycling so gas fuel for power generation. In addition, trigeneration, power generation, and heating, and refrigeration, the efficiency of cogeneration.

6. transfer of peak power

Use load management technology, storage, storage technology, etc., repelling peak electricity to address power peak tension.

7, transformer power saving technology

National annual electric energy losses in transformers up to 300 billion KWh, promote the economic operation of transformers refers to the same delivery conditions, select a reasonable operating mode, improve operating conditions. Transformer technology refers to the old high loss transformers to adopt new technology, new material alteration of the purpose of achieving low loss. Low loss amorphous alloy transformer is in the early 1980s United States developed a new energy-saving transformer that can be promoted.

8. motor power saving technology

Our motor manufacturing relatively backward, not only its own performance indicators compared with developed countries, there is an obvious gap and motor capacity differential, private motor. Therefore, the motor and the production of mechanical properties do not match, the "big horse cart" widespread. Development of special energy-saving motor with great energy-saving potential.

9, electric furnace steel power-saving technology

At present, China's machinery industry electric power consumption per ton of steel than foreign advanced countries higher than 120 ~ 200KWh. Energy-saving measures are: the arc steel furnace short network into horizontal arm, you can make tons of steel power consumption reduce 5%; the use of microcomputer control SCR AC double winding motor power adjustment system, enables lower power consumption per ton of steel 15 ~ 20KWh; the use of additional charge, smelting, spectral analysis of oxygen and other technical measures can make tons of steel consumption dropped 50 ~ 100KWh, and can increase productivity, reduce the melting time.

10, electric heating energy-saving technology

Electric heating is mainly used in metal heattreatment and low-temperature baking. Many heating furnace Thermal performance design, thermal insulation insulation performance difference, the heating mechanism is somewhat reasonable, furnace body surface heat emission is great, the thermal efficiency is low. Heat treatment furnace uses the heat of polycrystalline mullite fiber, air insulation sandwich and durable fiber direct spray dressing fire new technologies, can economize on electricity by 40%; used for dewatering, drying, curing at low temperature electric heating furnace, promoting the use of high-strength infrared heating technology, transforming thermal design, selection of properties of insulation materials, etc., can economize on electricity by 50%.

VI. concluding remarks

Through the above on the significance of energy efficiency and technology exposition, fully recognizing that energy is related to the survival of all humanity, of events in a sustainable development strategy, so that every citizen and units must have energy saving consciousness, always to energy saving, energy-saving everything to.

My Government has attached great importance to energy-saving work, not only to the legal form of energy-saving behaviour of citizens of the specification, while promoting the use of energy-saving products and technology, our school is the local University, is the technical talent, set up energy-saving energy-saving technology service centre, you can play the role of the intermediate bridge helps government propaganda on energy saving consciousness, under the provision of technical services at the grass-roots level, to train large numbers of primary power workers to improve their level of energy-saving business, faster, and improve the region's energy-saving capability.

【 Weak current College 】 water control system solutions

Water control management system uses the non-contact IC card as an electronic wallet, with high-performance shuikongji automatic control outlet solenoid valve on the water and off the water, according to the actual water consumption shuikongji automatic billing, from the consumer's IC card to automatically pay e-wallet; at the same time, the water control and management system for all hardware devices comply with the standards of the international electrical and waterproof, suitable for baths and shower charges control, water/hot water charge control, water charges, student hostels cold/hot water charge control, laundry fees control and other small consumer application.
Shuikongji can run offline, using the acquisition card for data acquisition, and management of a computer over a network connection with management software for device parameter setting, consumption data acquisition and query, statistics, reports, settlement, etc. To save water charges for electricity, science, the purpose of efficient management.
This system uses a simple, easy, powerful, and completely replace cash, tickets, cards, and other backward consumption patterns, the campus card system important subsystems.
Water control system:
PC: installing systems management software, combined with the card issuing machine for fulfillment, withdrawal, loss reporting, jiegua, changing card, card, information changes, and so on, and statistical data.
Shuikongji: in accordance with the amount of cases in the solenoid switch control and charge metering function.
Implementing agency: solenoid valve (control faucet water).
Card issuing machine: software on campus card management.
Water meter (metrology supply): uses the metering mode with more scientific, fair, reasonable
Data communication device: PC and networking features. shuikongji (Networking)
Capture card (offline): collecting data without complex networking, reduce the amount of construction
Water control system type:
Offline time water control and management system
Offline measurement of water control and management system
Network timing water control and management system
Networked metering water control and management system
Integrated water management system
Offline and online-advantages and disadvantages
Use networking water control: easily capture data and parameter settings with loss reporting function, which can effectively reduce loss lost card user. While the system installation, run complex, maintenance of large side, the price is relatively expensive, require a higher quality of the network, the Commission for (centralized baths).
Using offline water control: does not require complex network cabling, installation, maintenance is simple (low inputs). You cannot query and statistical detail, card consumption cannot loss reporting, management is relatively simple and practical, the system is suitable for use in various environments.
Adopted (integration shuikongji), that is, water meters, water valves, and controllers are all integrated into one device, install the most convenient; make the customer request metering charges you may choose this type. However, at present, our company's machine is offline-controller.
Advantages and disadvantages of timing and measurement
Timing-type (by using the time fees): a unit of time is the unit, press the use time charges, the longer the occupation, the costs were too high, the system can be setup time rate. Focus on improving facilities of usage, the awareness of water conservation.
Measurement type (by using water fees): unit with water flow unit, water use, water use, the more costs are too high, the system can set flow rate. There is a self awareness of water conservation
Water control management system features
Using special waterproof design, adapted to the baths and other environments.
Automatic water control and charging, you can achieve unattended, use the e-wallet transactions, avoid management vulnerability and more scientific management.
According to actual consumption billing withhold money, when you start charging outlet, water stop real-time when charging, the deduction of payment for individual consumption, consumers and contractors are fair and reasonable, taking into account their interests.
Due to billing deduction visible users voluntarily reduced water increasing water supply equipment use turnover ratio, and thus serve to conserve resources.
Use real-time billing deduction, multi-use, no not more. Users do not need water shut-off valve when it is consciously and eliminate the waste of water, saving valuable water resources.
First buying card after consumption, an effective solution to early-stage investment of the device
Training of conservation consciousness, Lee Lee Lee enterprises, has promoted the construction of spiritual civilization. IC card management facilitate accurate, improves management efficiency and quality.
Water control system using process
Prepare to drop cards: the card holder will campus card inserted from the right side of the shuikongji;
Start with water: the system verifies the legitimacy of campus card and card balances, verify passed, simply press the "start" button, the control of machine immediately on the water or billing begins, at the same time from small purse in the deduction, and displays the amount of consumption;
Suspend the use of water: during use, the cardholder if necessary to pause the water, simply press the "stop" shuikongji keys once shuikongji is automatically turned off solenoid valve, System halted billing and water;
Water again: in the course of using, the cardholder if the water again, only need to press the "start" shuikongji keys once shuikongji automatically opens the solenoid valve, the system begins billing and water;
Water is complete: the cardholder to use, the need to stop the water, simply add the campus card taken out from the inside, shuikongji system stop billing and automatically closes the solenoid valve, stop the water.

Weak current College】 【HVAC professional English comparison (2) --- Power By】 【China power house network.

B
back-flowpreventer|| Backflow device
backpressureofsteamtrap|| Condensate back pressure
Over pressure backwater backpressurereturn
backgroundnoise|| Background noise
backplate|| Baffle
bagfiller|| Bag type dust collector
baghouse|| Bag type dust collector
barometricpressure|| Atmospheric pressure
basicheatloss|| Basic heat consumption
hendmuffler|| Muffler elbow
bimetallicthermometer|| Double metal thermometer
blackglobetemperature|| Black bulb temperature
blowoffpipe|| Sewage pipe
blowdown|| Sewage pipe
boiler|| Boiler
boillerhouse|| Boiler room
boilerplant|| Boiler room
boilerroom|| Boiler room
booster|| Pressure pump
branch|| Branch pipe
branchduct|| (Ventilation) branch
branchpipe|| Branch pipe
buildingenvelope|| Envelope
buildingflowzones|| Building air area
buildingheatingentry|| Thermal entrance
Bulkdensity ||,, <,SPANclass=bodytext> packing density
bushing|| Bushing
butterflydamper|| Butterfly valve
by-passdamper|| Air heater, insist the bypass valve
by-passpipe|| Bypass tube

Weak current College products】 【mini pump selection and use of --- Power By】 【China power house network.

<br> In recent years, China's agricultural pumps of social ownership increased considerably, particularly with submersible pumps, self-priming, represented by small agricultural water pump, due to the low price, easy operation by the majority of users. However, due to .the small number of pump manufacturers, the technical force varies greatly, leading product quality and disparity. Plus operation, abuse, and other factors, to a large number of user-generated new troubles, even on present a lot of economic loss. According to .statistics, China's agricultural pumps every year production quantity of half used to replace the end-of-life products. Therefore, how to choose a single durable, roses and how to extend the pump water pump life becomes the majority of users are concerned about. .<br> <br> First, select the standard pump <br> <br> 1. What is the standardized pumps <br> <br> Standard water pump is national requirements under ISO, formulation, implementation of the latest model of pump. .Its main feature is the small size, light weight, performance tuning, easy operation, long life, low energy consumption. It represents the current pump industry's latest trends. <br> <br> 2, how to choose a water pump <br> .<br> When users select the pump, preferably to the agricultural machinery sector recognised point of sale, it is important to identify the manufacturer. Recommended priority purchase of inflated submersible electric pumps, and see the brand and product quality certification. Never buy "three ."(that is, no manufacturer, manufacture date, no production license) products, otherwise there is a problem, the user will be helpless. <br> <br> 3. what brand pump well <br> <br> As a user ., due to the limitations of knowledge, it is difficult to judge, the best way is to consult the pump side. If there is no one to go to the Advisory, may wish to consult the old pump users, especially those related to their conditions .of use, buy these user xiangjinzhe trustworthy, reliable and more mature product, is a wise choice. At the same time, according to the local power to decide the use-phase and single phase pump or pumps. <br> <br> 2 .. Select meet the requirements of the pump head <br> <br> Select 1, pump lift <br> <br> The so-called head refers to the head, and not lift height, with that in mind it is especially important for .selecting pump. Pump lift height for water pumping approximately 1.15 ~ 1.20 times. If a water source to the water Department of the vertical height of 20 meters, the lift of approximately 23 ~ 24 m. Select the pump should be water pump nameplate on the .best of the head and the head, such cases, the pump can be the most efficient, use will be more economic. But not necessarily require absolute equality, general deviation as long as no more than 20%, water pump are in more energy- .saving work. <br> <br> 2. how big is the nameplate head well <br> <br> Select the nameplate on head is far less than the required one pump head, often can not meet the user's wishes, even if they .'re able to smoke on the water, the water is very small, or even become a useless "free pump". Whether to buy, the higher the better pump lift? not necessarily. High-lift of pump for low lift, there will .be traffic and lead to motor overload, if long-running, the motor temperature rise, winding insulation will gradually aging and even burnt motor. <br> <br> 3. Select the appropriate flow pumps <br> <br> Water pump flow ., the water discharge, General should not be chosen too large, otherwise, would increase the cost of purchase of pumps. Should the specific analysis of specific issues, such as a user of their draught, flow self-priming pumps should be selected smaller; .such as a user of submersible pumps for irrigation, it may be appropriate to select some of the flow is large. <br> <br> IV. use of the <br> <br> Learn to use properly is to extend the water pump .life means, reduce economic losses. <br> <br> 1. for submersible pump <br> <br> Start the former should make the necessary checks: pump shaft rotation of normal, there is no card dead phenomenon; the location of the .impeller is healthy; cable and cable plugs with no break, abrasions and broken phenomena, etc. Running to observe the voltage changes, and normal control of the rated voltage within ± 5%. In addition, the water pump in water is important position, .should be selected in the water is abundant, no mud, water well, vertical suspension in water, does not allow the horizontal position, so as not to fall into mud or been suspended matter clogging water pump inlet, causing yield dropped even can't .on water. <br> <br> 2. for self-priming <br> <br> Should be placed in a better place to run in order to facilitate the rapid heat dissipation, reduced motor temperature. Otherwise, the long-run, .extremely easy to burn down the motor. As a farmer in using self-priming, because there is no coverage in the motor off the plastic film on which motor overheating, burned coil. Additionally, before starting, be sure to check the pump body of .water, otherwise, not only affects the suck performance by oneself, but also easy to burn down the shaft seal parts. Under normal circumstances, the pump starts after 3-5 minutes to the water, it should be immediately shut down. <br> .<br> 3. pump maintenance <br> <br> When the pump once has failed, don't remove it yourself. Because their removal is not knowing when a fault where the resulting blindly dismantle a pass; no special tools and often damaged .the already good parts. The best way is to have the experience, ¼ ó ¹ ì ¡ .and timely replacement of "overage" parts and wearing parts. Normally, the pump should repair every six months, ending with the "disease". <br> <br> 4, non-use period kept <br> <br> In the .non-use period, it is timely to pump water, lift-off side by side air pump water, especially during the cold winter months. And then place it on a dry place, so users can also be the focus of the water pump parts .painted butter in the bearing with grease to prevent corrosion of parts. In addition, the non-use period water pump, not longer, the better. If you do not use for a long time, not only easily corroded parts, also reduces the service .life of the pump. Map: submersible pump.

【 Weak current College 】 fan equipment model reference----Power By 【 China power house network 】

Fan selection General according to the following steps:
1. calculation to determine the required inside the tunnel ventilation rate;
2. calculate the total thrust It needed
It=△P×At(N)
Which, At: tunnel cross-sectional area (m2)
△ P: the sum of the resistance (Pa); General into the following four items:
1) tunnel inlet resistance and outlet resistance;
2) tunnel surface friction, suspension blower Assembly, bracket and signs of resistance;
3) traffic resistance;
4) tunnel between imports and exports due to temperature, pressure, wind speed and health of the pressure difference of resistance.
3, determine the overall programmes of fan arrangement
According to the length of the tunnel, as well as the general thrust jet fans provide thrust range, the preliminary determination in the tunnel length m Group on common layout, each group of fan n desk, each Typhoon machine thrust to T.
Meet m×n×T ≥ Tt total thrust requirements, taking into account the following restrictions:
1) n Typhoon machine-by-side, its center line horizontal spacing should be greater than 2 times the fan diameter
2) m Group (Taiwan) fan series, vertical spacing should be greater than 10 times the tunnel diameter
4. single Typhoon machine parameters
Jet fan performance to its imposed on airflow measured thrust, fan-generated thrust in theory is equal to the import and export air blower of momentum deviation (momentum equal to air mass flow and velocity of the product), in fan test condition first, import flows of momentum is zero, so you can calculate the test conditions, fan of thrust:
Theory thrust = p×Q×V = pQ2/A (N)
P: air density (kg/m3)
Q: air flow (m3/s)
A: fan outlet area (m2)
Test bench measured thrust T1 General theory thrust 0.85-1.05. depends on the flow distribution and blower internal and muffler structures-fan performance parameters of the chart in the fan thrust data to test bench measured thrust, whichever is greater, but measured thrust is not equal to the fan installed in the tunnel to the available thrust T, this is because the fan hoisting in tunnels are tunnel airflow velocity produces effects of unloading (Kodak en effect), the available thrust reduction. extent available coefficients K1 and K2 to represent and calculation:
T = T1×K1×K2 or T1 = T (K1×K2)
Where t: installed in a tunnel in jet fan available thrust (N)
T1: test bench measured thrust (N)
K1: the average speed of air flow in the tunnel, as well as fan outlet velocity on fan thrust coefficient
K2: axial flow fan off the tunnel wall distance coefficient between
The following occasions selection analysis using blowers
Warehouse ventilation
First, look at the warehouse goods is flammable and explosive goods, such as: painting the warehouse, you must select the explosion-proof series fan. Secondly, at the level of noise requirements, you can select a roof fan or environmental protection type centrifugal fan, (and there are sections of the roof fan is the wind starts, you can save power.
Finally, at the warehouse air rate, you can choose the most traditional SF-type axial-flow fan or fan-FA.
Kitchen exhaust
First of all, for indoor vertical soot kitchen (i.e. outlet in indoor wall), you can choose the size according to the fumes from SF-type axial-flow fan or FA-exhaust fan.
Secondly, for cooking and cooking needs through long pipe and tube bending in the kitchen, it is strongly recommended that you use a centrifugal fan (4-most common 72 centrifugal fan, low noise 11-62-friendly centrifugal blower is also very practical), this is because the pressure centrifugal fan with axial fans, and smoke without motor, motor maintenance and easier to change. Finally, it is recommended that the fumes from strong kitchen use both of these programmes and, better.
Upscale place ventilation
For hotels, tea, coffee, chess room, karaoke Hall upscale place ventilation, inappropriate use of conventional fan.
First of all, for a small room ventilation, the ventilation pipe connecting the Central vent room, can accommodate appearance and noise basis, select FZY series small axial fans, its small size, plastic or aluminium look, low noise and high air flow.
Second, the amount of wind and noise requirements more stringent, wind chassis is the best choice. Box inside muffle cotton, external Central ventilation pipe after the remarkable noise reduction can be achieved.
Finally, add that for gym indoor air, be sure to select the large air volume of FS-industrial electric fan, rather than SF-post-type axial-flow fan. This is from the appearance and safety considerations.

【 Weak current College 】 roof air conditioner unit characteristics and use

Roof air conditioner (RooftopHVACUnits hereinafter RTU) is a unit of the integral units, refrigeration, heating, ventilation, air purification, electric control, assembled in one, installed on the roof, so that the roof air conditioner. In recent years, the RTU to its compact structure, a wide range of energy, convenient to regulate and to reduce installation time and cost advantages are increasingly applied to air conditioning.

First, the unit features

1. the unit is compact, with heat and cold sources, air cooling. In recent years, the unit number to a modular design, convenient combination, eliminating water cooling system.

2. the unit in structural measures taking into account the rain, installed in the roof or on the outdoor terrace, you can open the rain and Sun.

3. the unit comes with full computer control, a high degree of automation and unit electrical connection is compact, simply connect a small amount of control and the main power cable.

4. the unit of refrigerating system efficient and reliable, can meet the requirements of the various types of air-conditioning, condenser and evaporator is usually copper with aluminum finned tube, high heat transfer efficiency.

5.RTU does not occupy the effective area of the room. In some areas, you can save electricity than water-cooled units.

Second, roof air conditioner in the applicable area

1. water cooler to wet-bulb temperature, and air cooling machines to dry-bulb temperature, so the RTU General in one day dry-bulb temperature changes in the larger region use more favourable, as China's Shenzhen and Hong Kong.

2.RTU since air cooling, so can be used to water deficit zone, like a Middle Eastern countries and the United States by the most used RTU. LasVegas China Hong Kong area due to lack of water resources, the Government requires the best air-conditioning design without cooling tower, so many buildings using RTU.

3. water cooler from building height restrictions, water pressure can not be too high, usually a line height 100m, cooling tower of the setting affects architectural appearance, so the current international 200m above too many ultra high building with air cooling machines.

3. unit settings

1. the roof unit setting, first select the most economical installation location, which is selected in the load set to reduce network cost.

2. to consider the impact of noise on the environment. Unit noise should not exceed the permitted noise standard, information display within the distance unit 5m, noise standard, from the machine noise from 5m less impact on the environment, but in a greater impact than 5m, so the best in residential buildings 5m above settings set. Present noise reduction measures in addition to the surface where you want to group or acoustical materials with installation, you can also set the compressor in the enclosures. In addition, reducing the exhaust fan rotational speeds, into the outlet located silencing devices are effective measures to reduce noise.

3. to consider the effect of vibration on the buildings to prevent solid sound into the working and living environment. Usually in the unit you want to set rubber, in the inlet and outlet connectors located on the vibration reduction, and as far as possible be set layout in a load-bearing walls that prevent settings in roof panel mid-time hygiene resonance.

4. the unit setting you want to consider building on the location of the exhaust fan and air vents, because those parts of the exhaust air flow will affect the flow of air on the roof, the RTU with vents at arm's length.

5. local wind conditions affect the operation of the unit's cooling fan. When the fan with the free rotation, will make the condenser of the air flow is blocked, and the unidirectional rotation of the fan housing to prevent the above phenomenon. In addition, the wind makes lighter RTU is difficult to maintain stability, so local wind conditions should also be considered.

6. the high-rise construction to consider whether the limitation of the power of crane, installation should determine unit weight.

4. Select and considerations when installing the unit

1. the unit of air tightness and Panel of leakage is important, rain, snow, dust, cold and hot air travel with air infiltration capacity of the unit, reducing the service life. In addition to considering the roof slope, so that the unit level.

2. the unit of a large number of condensate to the timely removal of stagnant water, because there will be propagation of microbiological and algal growth and affect air quality. The condensate water should not be discharged in the roof, gray this will reduce roof surface layer of life, generally available through sewer discharge.

3. trap best fitted to the inside to prevent freezing unit.

4. the roof unit of condenser coil fin, due to exposure to the outside air, the serious phenomenon of dust, reducing the efficiency of the condenser. At present, foreign companies design out of the unit comes with a small water pump of regular washing system, but because the system is technically complex, domestic machine still in active exploration and transformation phase.

5. conclusions

With the development of urban construction, building requirements, no roof unit of air-cooled cooling tower will be more and more, as energy-saving work of propulsion, roof air conditioner will increasingly be users especially water deficit zone users.

【 Weak current College 】 OTIS Otis Elevator malfunction set II-Power By 【 China power house network 】

Fault 51: 3100 elevator car stopped on the 3 floor anomalies-10 centimeters, showing a bumper unable to run the repair operation is out, after the examination found C1 contactor 21.22 contactor.

Fault 52: otis3100 symptom DZ not lit LVC not snap-action, according to LVC coil without 24V,. investigation no output DC24V LCB2, replace LCB2DC24 voltage manifold LM7824 the manifold after normal is Motorola's power over other model 1A. This failure by cnngaigh provides.

Fault 53: gen2 open climbing not panic drive fast die twice and then beat overhaul did not move, be sure to pull to, later on, the original TT two brake switch bs1bs2 are not synchronized.

Fault 54: [br] 300vf elevator, the runtime always appear sudden stop, and then addressing leveling, and continue to run, in response to previous outbound or internal elections. M4211, i.e. the current display: elevator malfunction, the inverter InverterOCT overcurrent. And monitor directory record for F101, inverter over current, over current protection in DSP implementation, when the fault is detected will stop base. This protection by comparing the current intensity and predefined error point (an E ^ 2 parameter represents the highest line currents). Find information on the random otis (here or would like to thank you! I failed solution), such a failure to check the motor of the Earth wire is loose. According to the information that really is the Earth wire is loose, tighten it seems after fault elimination or otis 's!!! engineer who experience old Ah, or else I go looking for reasons why Ah!!!

Fault 55: T40 elevator operation for 10 years, and suddenly one day lift appears uneven layer of phenomena, the IPU, IPD, DZ sensors and specially plates are moving too, been replaced in the same invalid DMCU, finally found control cabinet earthing terminal there are a few loose, tighten the elevator maintenance after normal. not only electrical components must bear line, Earth wire to tighten.

Fault repair 56: I recently had a 3100 elevator symptom is: from the top floor of 8 layers to the layers under sometimes elevator show from 8 layers quickly becomes 1 layer, Elevator emergency stop in 7 layers, former la RAM just fine, but the old, then checked the results found that the following cable 2LS, multimeter amount cable more than 200 of resistance, after the change has no longer appears.

Failed 57: otis3200 elevator, symptoms, no elevators do not run, no outbound, the room within the selected fault recording is DBD entry errors, clean up the UD relay 21.22-contact, the contact points, LB relay 21.22 UDX41.42-contact, the fault persists, the amount after the multimeter, found RF1 rectifier capacitance aging, the output voltage is not enough, after replacing capacitor 30V.

Failed 58 (debug encounter): GEN2 elevators each power power-TCB (M-1-2-1) failed: 0600SPB-Alert standby lock staircase time slightly longer, occasionally the panic, M-1-2-1 faulty records: 0302Door-Bridge0304DOL: alw.on. TCB fraternities DOL light flashes, the plugin to insert, self-learning, temporary solution; light curtain from 605 to 607.

Fault 59: owners reflect a 3100 elevator always appears inexplicable death ladder. to the scene see elevator panic but sometimes immediately up and running with TT enquiries LCBII. find the following failure: 0100, 0231. after suspected sedan handling maintenance fault signal of RS5. replacement lift is operating normally.

Fault 60: T2000 elevator operating normally, the door to normal after leveling, shut the door, when only forced to close button is not available, the light being normal, controlled door machine parameters normally COPY from new, MC Board after the closing film.

Fault 61: T40H, SGB plate no electricity, but the line is good. But that is not displayed, then SGB down clean, change to another lift can be used. Contact is not good, dust caused.

Fault 62: France 2000 elevator. no people inside, the old in the attic-recoil, 9/f, if someone teach-compartment, there would not be out of this problem, check the hash, steel, oil found too many, after cleaning.. ok.

Fault 63: 3200 lift, from the first floor when the lift to second floor flat floor area, lift occurs after the emergency stop, can stop-out slow, but cannot get the express train. The elevator up to the first floor, recovery express run, but when you run to the second floor flat floor area, lifts and an emergency stop, Zhou and villages. After checking, 1LS damaged, replace, the lift is complex.

Fault 64: Theo OH-CON (SPB + LCB2 + SIEI), sometimes stop to lift a floor fixed ladder, you cannot enter instruction. use TT view, as a DTO. examination hall doors are no problem-this failure frequency of about half a month. After replacement door signal cable, Elevator back to normal.

Fault 65: T60 elevator, elevator to uplink, downlink cannot start, contactors, also as the primary contact for after enquiries, contact a phase broken, this situation has occurred on many occasions, at attention. This failure by wyde provides. The automatic door closing time OTIS2000VF adjustment ~ today a landlord that elevator automatic closing time is too long (to open the door, not by the door button) for a long time to shut this is minor problems many people do not care about, here to tell some of the friends do not know the parameters in OC have CC-DT (car button) and HC-DT (outbound button) closing time is milliseconds.As the unit of .40 and 4 seconds. ~ the elevators original time parameter is 80, elevator to 8 seconds before the door after changing back 40-, and four seconds to close the door.

Fault 66: T-3100R, ladder in a layer, no fast, slow, pull-in, release OP repeatedly. Go to maintenance workers, has changed frequency converter, motherboard LBII .... According to RF1 plate electrolysis leakage, normal replacement ladder. Inspiration: handling failure should carefully check all levels point pressure, blind hands-on easy walk to many detours!!!

Fault 67: T-3100 ladder up to the top speed changing, suddenly stop, and then return to the base station. According to the magnetic stripe on the exchange rate between the slit (7 mm or so), repaired staircase.

Fault 68: T-3 ladder after power on, power on the trip with moving. According to brake resistance after blowing, get a new stair properly. This failure by gaoyuzhou provides.

Fault 69: XIZIOTIS, STAR/616G5/LCBII. Occasional closed after starting, frequency converter displays the DBD protection fault. Power outage and then resume normal transmission, elevator. After frequent the same fault, related contacts, replace the SW1, SW2, DFC, BY, UD. Having a tough time fault reproduce, investigation discovery in SW1.SW2 of auxiliary contacts loop has a threaded BY long closed guide point, which is not on the original diagram. Is artificial added (perhaps to brake lines added). After its demolition, run half year didn't make this type of failure. But another similarly elevator without such failures. Strange? please insert make moves!

Fault 70: Xizi stopped in Gen2 elevator for any 1, 2, between the layers. Because emergency rescue operation breakdown, ladder can't move. TT: brake switch failure, check the climb without DC24V, well road (seatbelt OH) found out the result of long-term insurance socket void received the thermal deformation and fracture. Fix elevator properly. This failure is part of the fetus, colleagues note!!!. The other cannot be taken with a grain of salt TT: Oh.

Fault 71: OTIS3100, safety circuits, display, are fine. Outbound in selected, are invalid. Could not repair, car top station two talents to downlink. According to the preliminary charge converter blowing a resistor, the resistance of the merger, with similar parameters resistance instead. Elevator normal so far. The failure only touched once!

Fault 72: ever heard of the elevator inbetween the two layers are automatically opened the car door, there's no fear of passengers. I do not believe that the previous repair a fault, it is the emergence of this phenomenon. 3100 elevator, the runtime stops in between the two-story building, automatic door, passengers face well road, the end result is a car top of RS14 broke a piece, like car top junction box following the piece, replaced correctly. Is the handle of door signal board DCSS5. Random signal to the door. Thus, serial communication shortcomings not small, parallel communication signals to true.

Fault 73: one TOEC-3 elevator, owners reflect every morning when you open the door to close open staircase are in place, you need to force the door after outside in place, work is normal, and full-day are OK, maintenance personnel continually examine three days, the roots are no fault found, finally found a portal crane carbon brush card resistance, resulting in poor contact, restored to normal.

Fault 74: 3100R2 nuclear AODA door no display, check for door circuit board power supply section 51 European resistance destroyed, replaced the normal resistance door.

Fault 75: the door is closed are not T-40 place! check door resistance voltage normal normal!! check found motor brush after tightening loose!.

Fault repair of yesterday 76: T-40 elevator is 12/12 the elevator down to the 6th floor! there is no coherent jitter! 1/f, basic in 7/8 around the lift under no fault logging!! after checking is adjusts the machine fault! incorrectly, causing the wire rope traction wheel wear and bearing severe! wire rope shall not, in my first ropes before oil clean! adjust tightness of wire rope, the basic no fault! a few days to swap big wheel/rope/to do not necessarily come also appears this fault! I lift this line soon! if you say is wrong oh please don't laugh at me! my friends can also be valuable comments!

Fault 77: multiple Xizi STAR with Yaskawa inverter frequent OC overcurrent protection, SC burn occurs, then check the module main power is 14KW and inverter is only 9. 5KW do not match, then the manufacturers after reconstruction.

78: 3100LCBII elevator malfunction, failure, squatting, restore normal functioning, but some time later 10 appears where the missing issue, and then squatting, check individual wells road signal all normal, and then look inside the relay State control cabinet, LVC in failure, leading to relay release LV1, LV2 relay does not suck, check the LVC lines with no exception, LCBII plug plug it in again after fault disappears, suspected bad, adjust the plug plug back in operation after no exception.
Fault 79: 3100 elevator sometimes appears lost location of faults, the check, when the elevator from the ground floor of the top running a 100 per cent at fault occurs, check the wells road signal all normal, really can not find the reason, you will be well road OVF20 learning, learning revealed that failure is not in the event of a suspected chip data error, because learning after leveling accuracy is not an exception.

Fault 80: XO--STAR hospital ladder. DO2000 door 4 type. Switch on the door slowly, and jitter run, according to door plate 3-phase output there is a phase in poor contact, pull down the interface, plug, fault disappears, is operating normally.

Fault 81: 3100R2 in maintenance, off the main power and close power, often causing nuclear AODA door plate is damaged. Detection voltage 403VTo check the control cabinet, found TRF1 transformer input termination 380V-end, after grafting 399V side, no failure occurred. Recommended maintenance 3100R2, don't ruin the continuous frequently.

Fault 82: Theo 21VF elevator to spot slow cars can run, inverter indicates display * 047TT reality security company, MCSS onboard display properly. Safety circuit encoder lines are normal. In the maintenance of State press and hold down the button has the electric motor. The problem is brake cannot open, check brake switch normal brake contactors also sucks. Weight without brake coil resistance. Finalize the brake coil damage. Replacement properly.

Fault 83: Theo FO elevators ACB-2BRDS gantry crane. The elevator can run but do not open the door to check the resistance of door panel door plate switch RS5 door seated signal is functioning, the last in a line of communication within the search found DC30V patchy, finally found a top connection box plug-ins are loose. After the new fastening.

Fault 84: LCB-IIAMCB2SIEI OH5000 configuration. Lift does not close the door to the scene is also not displayed within, the check finds that found on plug-ins plug RS5, code is passive. Fix to normal but after the show or not show the fire door, TT, turned out to be a significant damage to the RS5 plates burn marks. Replacement properly. But the elevator or cannot run. The original formation of the RS5 plate also broke (lock staircase) replaced correctly.

Fault 85: GN2 elevator door descendants to block the light curtain to panic, or seeing the DTC failures TT, or seeing the door status is found no change in LRD. The lookup parameters found LRD parameter values wrong change back to normal.

Fault 86: Configure FO the freight elevator, elevator door plate ACB-IIBRDS does not close the door or the door door motor in jitter door resistance heating quickly. Check the switch in place good signal, RS5 replacement fault persists, there is resistance as measured by measuring the electrical resistance, and electrical and mechanical brush correctly, capacitor replacement fault persists. Finally replace door plate back to normal.

Fault 87: OH5000 (MRL) configuration LCB-IIAMCB2 gearless machine. Elevator operation after a break time always appears converter protection (overload), view the inverter host settings parameters found inconsistent with the host. Modifications done from the new host learning after the elevator runs without exception.

Fault 88: Theo model STAR configuration LCB-IIAMCB2SEIE13VTR host. Elevator cannot run, the engine room to play-based maintenance, climbing can only run a break time cannot run, plug in the TT, I found the 1LS misoperation enquiries line found control cabinet Plug one end has loose, tighten back to normal.

Failure 89: Theo model STAR configuration LCB-IIAMCB2SEIE13VTR host. To the scene of inverter protective (velocity anomaly) reset and elevator cannot run, replace the following lift after the encoder is running properly.

Failure 89: Theo model STAR configuration LCB-IIAMCB2SEIE13VTR host. To the scene of inverter protective (velocity anomaly) reset the elevator runs correctly but run a week after the recurrence rate anomaly. Check the encoder Circuit found that plug-in PIN process do not sometimes cannot conduction. Processed correctly.

Failure 89: Theo model STAR configuration LCB-IIAMCB2SEIE13VTR host. To the scene of inverter protective (contactor error protection) reset the elevator runs correctly but run time recurs after you modify the converter parameter protection.

Fault 90: Theo model STAR configuration LCB-IIAMCB2SEIE13VTR host. To the scene of inverter protective (overload) Elevator down to run properly. Each time you run up to the top level is an overload protection, frequency converter modify AMCB parameter after the elevator up and running.

Fault 91: Theo model STAR configuration LCB-IIAMCB2SEIE13VTR host. To lift properly, powered converter will not be able to enter the menu. Replace the inverter from the new lift up and running after debugging.

Fault 92: 300 elevators, 23/f, close the door has opened the door, displayed in Flash, to room playing INS shorted lock elevator is not running, the Terminal voltage 110V.2-1-3DFC lowercase, DBP relay 21/22 is damaged, replace it to another point on the back to normal.

Fault 93: GEN26/6 two parallel ladder, in normal running two elevators with emergency stop, check your power supply distribution Chamber found elevator C phase 380V power is low, at 350, check control cabinet phase sequence relay display undervoltage lacks protection, Elevator power normal elevator also work correctly!!!.

Fault 94: otis3200, cp4 tripping, identified as the brake coil burn, etc to get a new fault persists after that. Due to the dual switches, cp4w fractured all the way, discover the rectifier bridge pile of breakdown, replacement, and troubleshooting.

Fault 95: two parallel 3200, failure to B ladder cannot eliminate numbers, A normal, judgment the ladder for serial communication problem., or serial communication line is bad, the control cabinet serial communication connectors reseat it. troubleshooting. Sometimes the failure appears to be complicated, so long as the careful, is very easy to crash.

Failure 96: a T40-TNT Express downlink normal stop uplink starts. Slow uplink, downlink chenzhonggan significantly. The inspection found speed parts brake insurance have a burnt down. Replacement properly.

Fault 97: 3200, the lift to the first floor could not find the location, Room 213 observation lift to 1st floor 1LS sometimes become small, after doing a child again emphasise learningThe elevator was normal.

Fault 98: Xizi Otis XO-STAR passenger elevator LCB-Ⅱ + LPB + Yaskawa inverter, the symptom as running floor missing, Elevator emergency stop, show "—" and the base station returns to normal after addressing, this phenomenon is incidental, two or three days or longer; or in the elevator door leveling close, immediately after the safety edge are flexible without jamming, light eyes are invalidated, forced to close after reverse base to return to normal, or is not in the entrance area of the door, when stopped escalator inspection judgements is leveling sensors work instability, replace the observation for a period of time after work. Failure to do this kind of sensors (leveling sensors of type bistable magnetic induction) performance is not very stable.

Fault 99: T40 elevator, cabin high 5 floor ground Ridge 1 m emergency stop, 10/f, outbound display. control cabinet fault display d., fault indicator SDPL lit. climbing can run unchanged, however, the inspection to PS plate fuse open circuit F2 to enable + 42V power circuit breaker replacement fuse. after normal.

Fault-100: T40 elevator door side, almost every layer of closed cabin appears after the call-number of fault, the fault is frequently adjusted close to last PCT time to slow down, the fault disappears. the failure by jiangwei provides. Troubleshooting 101: T-3 (Ningbo Xinda door) sometimes does not switch on the door, according to the normal switch relays pick-up, gantry crane and gantry crane plates are normal, gantry crane and gantry crane after discovery panels interface is bad, the replacement interface correctly.